| Summary of Significant Accounting Policies - Schedule of Other Current Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018 | 
|---|---|---|
| Accounting Policies [Abstract] | ||
| Indemnification assets | $ 875 | $ 875 | 
| Prepaid assets | 2,571 | 1,230 | 
| Other | 76 | 65 | 
| Total other current assets | $ 3,522 | $ 2,170 | 
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- References No definition available. 
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- Definition Amount of assets classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of current assets classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of asset related to consideration paid in advance for other costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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